What exactly do u mean by growth curves ( give me some examples )?

Tracks annual growth: Doctors track each child's growth in height and weight, by putting a dot on a growth chart each time the child has an annual check-up (more often if under 2 years old). Charts compare the child's growth to the average growth of children in the country. If a teen has no height growth for 2 check-ups, he is likely finished growing tall. One can look at the charts at: http://www.cdc.gov/growthcharts/